AudioQuest M-27 specifications Setting the Clock, Recording the Calibration Level, Using a Printer

L-AVG	The average or equivalent level for the HTL, LTL, or
LEQ	3 dB for the event.
DOSE	The percent Dose for the HTL, LTL, or 3 dB for the
	event.
TWA	The Time Weighted Average for HTL or LTL or the
SEL	Sound Exposure Level for the event.
PEAK	The Peak Level for the event.
LEVEL
MAX	The Maximum Level for the event.
LEVEL
RUN	The Run Time of the event.
TIME
Setting the Clock
	If the clock is not set, it functions as an elapsed time clock from the time the unit is reset.
	The clock can be either a 12- or 24-hour clock depending on an internal switch.
	When the clock is set to the current time, it will record the actual time for Events and Histograms.
CODE	Press until the display includes a colon. The display
HL3	is in hours and minutes. To set clock, press 0 and num-
	bers for the current time. The time will move in from the right. The clock is not set until
	PAUSE/RESET is pressed.
PAUSE	Resets the current time to the number in the display.
RESET	The display then shows CLo.
Recording the Calibration Level
	The procedure does not calibrate the unit. It stores the CAL level to assure the unit was calibrated.
CODE	Press the key until CAL and the current calibration
HL3	level is displayed. To recalibrate the unit, press SOUND
	LEVEL with the microphone inserted in a calibrator.
SOUND	The display will show SPL (the calibrator level). Wait
LEVEL	until the level is steady and press PAUSE/RESET.
	If the unit is slightly out of calibration, gently adjust

	the CAL screw. If the unit is more than a few decibels out of calibration, it should be
	rechecked.
PAUSE	Resets the calibration level. Hold key down until the
RESET	display shows CAL.

Using a Printer
	The printout (Figure 2) can include a heading, a summary of the data, event data, 1 to 3
histograms, 1 or 2 percent time statistical distributions, and 1 or 2 percent dose statistical distributions. The
histograms can be of 1, 3, 5, or 10-minute duration. The histograms and statistical distributions can be text,
graphical or both. The printout can be changed and edited before or during printing to print only desired
data. Data is not lost during a printout.
CODE	To print only HTL, LTL, or 3 dB histograms and statis-
HL3	tical distributions, hold key down until the one desired
	is displayed. To print all 3, hold key down until all 3
	are displayed.
PRINT	Prints heading, summary, events, and desired histo-
	grams and distributions.
HIST 1	Prints 1-minute Histograms or 5 minutes per line. If
	HTL, LTL, and 3 dB are displayed all 3 will be printed.
HIST 3	Prints 3-minute Histograms or 15 minutes per line.
HIST 5	Prints 5-minute Histograms or 30 minutes per line.
HIST 10	Prints 10-minute Histograms or 1 hour per line.
	If HIST 1,3,5, or 10 is pressed during a printout, the next line will print with the new time base for
a clearer report.
STAT	Prints a % Time and a % Dose statistical distribution.
PAUSE	Pauses the printer to edit printout or adjust printer.
RESET	The display shows PSE. To continue printing, press
	PAUSE again. Other print keys will alter the printout.
	To conserve power do not leave PSE on the display.
	ON/OFF will also exit print mode.
ON	Stops the printout. If the printer buffer contains data
OFF	the printer may run for several seconds after O-5 is
	displayed; however, the printout has stopped.